Gamers join a teenager and his massive, mythical companion as they flee from hunters through the Nordic wilderness in Troll and I. Otto is a young, agile man who is skilled with a spear and adept at melee attacks, while Troll specializes in brute force attacks, healing, and simply scaring away foes. Players can switch between the two characters at any time as they make their way through the forests and mountains, sneaking when they can, battling when they must, and gathering materials to help them with their journey. Troll and I also supports local split-screen multiplayer action.